Analysis
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max time kernel
149s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
23-05-2024 19:46
Static task
static1
Behavioral task
behavioral1
Sample
75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe
Resource
win10v2004-20240426-en
Behavioral task
behavioral2
Sample
75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe
Resource
win11-20240508-en
General
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Target
75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe
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Size
771KB
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MD5
d07907a0efa31135f9392fa623d821bf
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SHA1
942c7783ad119e8f8f7b54035793c501e4204f0e
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SHA256
75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca
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SHA512
6794144445c5d8b4ea64291cd72ddf25a536a7c96d9eeb88c71e0a0094651168ad8a9205caf5ec5da6b0b46b3f26def663f578369a1b3a084343c44e59dc455a
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SSDEEP
12288:gdY2I03rbaek5sc5pYca5CEAkMQYoI+EEi4KbzjgZ2xa80/gNYWzjWno:gdYHNSRi44jgZyaxAWno
Malware Config
Extracted
djvu
http://cajgtus.com/test1/get.php
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extension
.vepi
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offline_id
EGfa5svnSGFJka7LZBQoqff0QtO1IpTauoDvGvt1
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payload_url
http://sdfjhuz.com/dl/build2.exe
http://cajgtus.com/files/1/build3.exe
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ransomnote
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Signatures
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Detected Djvu ransomware 16 IoCs
Processes:
resource yara_rule behavioral1/memory/3696-4-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3696-5-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3696-6-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/3696-3-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2540-2-0x0000000003D00000-0x0000000003E1B000-memory.dmp family_djvu behavioral1/memory/3696-17-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4108-20-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4108-27-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4108-26-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4108-28-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4108-31-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4108-33-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4108-34-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/2992-35-0x0000000000400000-0x000000000200C000-memory.dmp family_djvu behavioral1/memory/4108-36-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu behavioral1/memory/4108-37-0x0000000000400000-0x0000000000537000-memory.dmp family_djvu -
Djvu Ransomware
Ransomware which is a variant of the STOP family.
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Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe -
Modifies file permissions 1 TTPs 1 IoCs
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Adds Run key to start application 2 TTPs 1 IoCs
Processes:
75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-711569230-3659488422-571408806-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysHelper = "\"C:\\Users\\Admin\\AppData\\Local\\b5a00b3d-9423-4156-ae69-66c806e88627\\75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe\" --AutoStart" 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe -
Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 4 api.2ip.ua 6 api.2ip.ua 15 api.2ip.ua -
Suspicious use of SetThreadContext 2 IoCs
Processes:
75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exedescription pid process target process PID 2540 set thread context of 3696 2540 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe PID 2992 set thread context of 4108 2992 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exepid process 3696 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe 3696 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe 4108 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe 4108 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe -
Suspicious use of WriteProcessMemory 26 IoCs
Processes:
75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exedescription pid process target process PID 2540 wrote to memory of 3696 2540 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe PID 2540 wrote to memory of 3696 2540 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe PID 2540 wrote to memory of 3696 2540 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe PID 2540 wrote to memory of 3696 2540 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe PID 2540 wrote to memory of 3696 2540 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe PID 2540 wrote to memory of 3696 2540 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe PID 2540 wrote to memory of 3696 2540 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe PID 2540 wrote to memory of 3696 2540 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe PID 2540 wrote to memory of 3696 2540 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe PID 2540 wrote to memory of 3696 2540 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe PID 3696 wrote to memory of 4524 3696 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe icacls.exe PID 3696 wrote to memory of 4524 3696 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe icacls.exe PID 3696 wrote to memory of 4524 3696 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe icacls.exe PID 3696 wrote to memory of 2992 3696 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe PID 3696 wrote to memory of 2992 3696 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe PID 3696 wrote to memory of 2992 3696 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe PID 2992 wrote to memory of 4108 2992 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe PID 2992 wrote to memory of 4108 2992 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe PID 2992 wrote to memory of 4108 2992 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe PID 2992 wrote to memory of 4108 2992 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe PID 2992 wrote to memory of 4108 2992 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe PID 2992 wrote to memory of 4108 2992 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe PID 2992 wrote to memory of 4108 2992 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe PID 2992 wrote to memory of 4108 2992 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe PID 2992 wrote to memory of 4108 2992 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe PID 2992 wrote to memory of 4108 2992 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe 75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe"C:\Users\Admin\AppData\Local\Temp\75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe"C:\Users\Admin\AppData\Local\Temp\75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe"2⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\b5a00b3d-9423-4156-ae69-66c806e88627" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
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C:\Users\Admin\AppData\Local\Temp\75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe"C:\Users\Admin\AppData\Local\Temp\75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe"C:\Users\Admin\AppData\Local\Temp\75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Suspicious behavior: EnumeratesProcesses
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EAFilesize
1KB
MD59e130b50184e39e32205c9dd3befee15
SHA1150b8bfb3208d3a854996e02c1470d81530335b5
SHA2567b5bd8bc8ac2cd655c212c4790e5d9a259046730a9f0bb51616b036da55d2c50
SHA5123cf76690e692c874792fa99d6358ebdd3596bab33bede653067375fc7de617eb7f150f52e640d34b2d51dcbe39c5bb88381bdc0279054ab65d5f1492d89f648f
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464Filesize
724B
MD58202a1cd02e7d69597995cabbe881a12
SHA18858d9d934b7aa9330ee73de6c476acf19929ff6
SHA25658f381c3a0a0ace6321da22e40bd44a597bd98b9c9390ab9258426b5cf75a7a5
SHA51297ba9fceab995d4bef706f8deef99e06862999734ebe6a05832c710104479c6337cbf0a76e1c1e0f91566a61334dc100d837dfd049e20da765fe49def684f9c9
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\24BD96D5497F70B3F510A6B53CD43F3E_3A89246FB90C5EE6620004F1AE0EB0EAFilesize
410B
MD5d4ab2657a8c66b9bea2b0994240f95f3
SHA1f441b2be888c7f731057ff0a26e128aae840d443
SHA256e1bba3c58032d5e0f29cc5ad1147b7e5592e9e138278edd35f9be5af3544184a
SHA512b00df04b75b26909b2ed0fe0a0967beb79bf8f9a98433e31f63f7319efe16165441bb8d059930cd974a787da81bde2ec3587c321cf4ae402c2d1f2356d8d4b51
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C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\CAF4703619713E3F18D8A9D5D88D6288_F2DAF19C1F776537105D08FC8D978464Filesize
392B
MD5329decb4d5bf8202a52ff11ba80b150a
SHA1223537258a02058d73cd8a534c102db42fb29945
SHA2563ba921a9404e3da85603e1849e2e2fdc89ce3c1d3967958ce16bce46cd95e6aa
SHA512a87dfd434a94a2c5a03815136970c535e5a55739b8382dd4f8995c384fa3849c5eb74d996782c0bbb1161eab43d31fc9341f28e5c3ef1884044e766d840edf7c
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C:\Users\Admin\AppData\Local\b5a00b3d-9423-4156-ae69-66c806e88627\75fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca.exeFilesize
771KB
MD5d07907a0efa31135f9392fa623d821bf
SHA1942c7783ad119e8f8f7b54035793c501e4204f0e
SHA25675fdcad9646ad3fa16eb6958f285a073a77ab99d08aa8653f09b990f5c57cdca
SHA5126794144445c5d8b4ea64291cd72ddf25a536a7c96d9eeb88c71e0a0094651168ad8a9205caf5ec5da6b0b46b3f26def663f578369a1b3a084343c44e59dc455a
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memory/2540-2-0x0000000003D00000-0x0000000003E1B000-memory.dmpFilesize
1.1MB
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memory/2540-1-0x0000000002280000-0x0000000002320000-memory.dmpFilesize
640KB
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memory/2992-35-0x0000000000400000-0x000000000200C000-memory.dmpFilesize
28.0MB
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memory/2992-21-0x0000000000400000-0x000000000200C000-memory.dmpFilesize
28.0MB
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memory/3696-17-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/3696-3-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/3696-6-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/3696-5-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/3696-4-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/4108-27-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/4108-26-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/4108-28-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/4108-31-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/4108-33-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/4108-34-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/4108-20-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/4108-36-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB
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memory/4108-37-0x0000000000400000-0x0000000000537000-memory.dmpFilesize
1.2MB